That was exactly what I have been looking for. A very good explanation . I finally have at least some of the knowledge I will need so I don't look like a dumba** when I talk to the paint supplier.

Does anyone have any suggestions on how to prep areas that are hard to get to, like under the rolled box rails of my 56, but are still seen? It is near impossible to get this area down to bare metal, and it is starting to get surface rust.